Cecil Moore wrote:
... The radiation resistance of a 6" long Texas Bugcatcher coil
is approximately the same as a 6" piece of wire.
______________

We agree on that point, Cecil.

But if, as if you posted earlier, "a helical monopole is 90 degrees long at
the design frequency," are you claiming that such a short, self-resonant,
normal-mode, helical monopole has the same radiation resistance and system
performance as a self-resonant linear monopole of about 1/4 of a free-space
wavelength (other things equal)?

And if you do, could you please explain why this approach was not adopted
many decades ago for use by AM broadcast stations?